Surgical instrument



FIG. 1 is a top, front, left side perspective view thereof;

FIG. 2 is an enlarged fragmentary view of the portion shown in the box 2 in FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a cross-sectional side view taken along line 4—4 of FIG. 3; and,

FIG. 5 is a cross-sectional end view taken along line 5—5 of FIG. 3.

The broken lines representing portions of the instrument are included for environmental purposes only and form no part of the claimed design. 

The ornamental design for a surgical instrument, as shown and described. 